Home / 21,712.34-29,930.36-16,988.42

Finding the Fourth Proportional to 21,712.34, 29,930.36 and 16,988.42

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Solution

The fourth proportional to 21,712.34, 29,930.36 and 16,988.42 is: 23,418.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.34 : 29,930.36 = 16,988.42 : x
  2. Step 2: Convert to fraction form
    21,712.34/29,930.36 = 16,988.42/x
  3. Step 3: Cross multiply
    21,712.34x = 29,930.36 × 16,988.42
  4. Step 4: Simplify right side
    21,712.34x = 508,469,526.43
  5. Step 5: Solve for x
    x = 508,469,526.43/21,712.34
  6. Step 6: Final answer
    x = 23,418.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.